IRJET-Comparative Study on Strength of Concrete by Partial Replacement of Fine Aggregate using Coppe

International Research Journal of Engineering and Technology (IRJET)

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Volume: 08 Issue: 03 | Mar 2021

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COMPARATIVE STUDY ON STRENGTH OF CONCRETE BY PARTIAL REPLACEMENT OF FINE AGGREGATE USING COPPER SLAG & GGBS K.SELVI1, N.GOWSALYA2 1Assistant

Professor, Department of Civil Engineering, Nandha Engineering College, Tamilnadu, India Student, Department of Civil Engineering, Nandha Engineering College, Tamilnadu, India ---------------------------------------------------------------------***--------------------------------------------------------------------1.2 SCOPE & OBJECTIVES Abstract - Concrete is one of the major constituents in 2PG

construction work. Many Waste products are used as aggregate for concrete to improve the strength and durability.

GGBS is a one of the supplementary material to replace with cement to reduce the consumption of cement and Copper Slag is the By product material from the manufacturing of copper.

A large quantity of copper slag disposed as a waste in landfills to make an affects to the environment. This study is to evaluate the possibility of usage of GGBS and Copper Slag. In this Study, the partial replacement of fine aggregate by using copper slag and GGBS to be compared with the proportion of 10%, 20%, 30%,40% and 50% with mix design of M60 Grade.

Hardened concrete test such as compressive strength, tensile strength can be take. Replacement of GGBS is performed as High Performance concrete.

The scope of this project is to make a use of copper slag and GGBS is to replace on concrete to gain the strength as “High Performance Concrete”.

The objective of this study is to evaluate the possibility of usage of GGBS and Copper Slag which results “High Performance Concrete”.

To study the strength and durability of the concrete.

Copper slag reduces the cost of concrete.

2. Materials used and its Properties:

Key Words: Ground Granulated Blast Surface (GGBS), Copper Slag, High Performance Concrete

2.1. Cement: The Cement used in this study was Ordinary Portland cement (OPC) which is the most important type of cement.

OPC cement of 53grade of cement use in this experimental work. Conforming weight of each cement bag was 50kg.The property of cement is shown in Table 1

1. INTRODUCTION 1.1 GENERAL Civil engineering practice and construction works in India depend to a very large extent on concrete. Concrete basic constituents are cement, fine aggregate (sand), coarse aggregate (granite chippings) and water. Hence, the overall cost of concrete production depends largely on the availability of the constituents (and selected additives). The continuously growing construction industry has posed the possibility on depletion of natural aggregates in the future that would increase the cost of concrete material. So the need for replacement of present aggregates is a growing concern to meet the demand for aggregates in the structures.

Thus alternative options are adopted for non-load bearing walls and non structural floors in buildings. Different alternative materials such as recycled aggregate, foundry sand, Copper slag, GGBS etc. In this project, use copper slag and GGBS as replacement of fine aggregate. The usage of GGBS is to make “High Performance Concrete” and the usage of Copper slag is to improve the strength and the results indicates that water demand reduced almost 20% by using copper slag compared to other mixtures.

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Table 1: Properties of Cement Physical Properties

Value observed in investigation

Specific gravity

3.10

Initial setting time (minutes)

50

2.2. Fine Aggregate M-sand was used as Fine aggregate with fineness modulus of 2.85 and it should passing through IS Sieve 4.75mm. It should have fineness modulus 2.50- 3.50 and silt content should not be more than 4.The properties of Fine aggregate are shown below in Table 2.

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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395-0056

Volume: 08 Issue: 03 | Mar 2021

p-ISSN: 2395-0072

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Table 2: Properties of Fine Aggregate

Table 4: Properties of GGBS

S.NO.

PROPERTY

VALUE

S.NO.

1

Specific gravity

2.62

1

2

Fineness modulus

2.50

PROPERTY

VALUE

Specific Gravity

2.9

Bulk Density (Gm/Cm3)

1100

2

2.3 Coarse Aggregate: 2.6 Copper Slag

The coarse aggregate are the blue granite stone of which particles greater than 4.75mm they should be hard, strong, dense, durable and clean. It should be conical shape. Flaky pieces should be avoided. It creates much better bond between cement paste and the Aggregates. The properties of Coarse aggregate are shown below in Table 3.

The utilization of solid waste is the challenge for the civil and environmental to utilize the waste from different industry to the sustainable development with cost concern of the present materials.

S.NO

PROPERTY

VALUE

1

Specific gravity

2.53

The use of copper slag in the production of cement, mortar and concrete as mixed with lime stone powder, dust, cement replacement use as partial replace of coarse and fine aggregates. The usage of this slag reduces the usage of primary materials as well as reduces the construction depth which in turn reduces energy demand in building.

2

Water absorption

2.71%

Table 5: Properties of Copper Slag

Table 3: Properties of Coarse Aggregate

2.4 Super Plasticizers Super plasticizers are known as high range water reducers are chemical admixtures used where well dispersed particle suspension is required. Conplast used based on study of literature.

S.NO

PROPERTY

1

Specific Gravity

4.12

2

BulkDensity (Gm/Cm3)

2.31

3

Water Absorption

VALUE

0.40%

2.5 Ground Granulated Blast Slag 3. METHODOLOGY GGBS is a cementitious material and byproduct from the blast furnace. It is a mixture of iron ore, coke and limestone which heats at temperature about 1500C. GGBS is used in concrete as a partial replacement material to improve the performance as high. It may be to reduce the heat of hydration and to avoid retardation in cold weather.

Two major uses of GGBS are in the production of quality improved slag cement namely Portland Blast Furnace cement (PBFC) and High slag Blast Furnace cement (HSBFC).

GGBS content ranging typically from 30 to 70% and in the production of ready mixed or site batched durable concrete.

Concrete made with GGBS cement sets more slowly than conventional concrete, but also continuous to gain strength which gives results in lower heat of hydration and lower temperature rises and makes avoiding cold joints easier.

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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395-0056

Volume: 08 Issue: 03 | Mar 2021

p-ISSN: 2395-0072

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4. RESULT AND DISCUSSION 4.1 Compressive Strength Test Compression test is the most common test conducted on hardened concrete, partly because it is an easy test to perform and partly because most of the desirable properties of concrete are qualitatively related to its compressive strength. The strength of concrete is usually defined and determined by the crushing strength of 150mm x 150mmx150mm, at an age of 7 and 28 days. The mould and its base rigidly clamped together so as to reduce leakages during casting.

Graph 2: Compressive strength (GGBS) Table7: Test Results For Compressive Strength of GGBS Mix

GGBS (%)

7 days 28days (N/mm2) (N/mm2)

0%

45.11

55.5

10%

42.66

51.1

20%

48

53.3

30%

47.1

56.4

Graph 1: Compressive Strength (Copper slag)

40%

55.5

64.4

Table 6: Test Results for Compressive Strength of Copper Slag Mix

50%

54.6

59.5

CS (%)

7 days (N/mm2)

28days (N/mm2)

0%

43.5

53.3

10%

36.89

42.2

20%

38.6

44.4

30%

44.89

62.22

40%

35.5

40.88

50%

33.7

39.5

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4.2 Split Tensile Strength Test For tensile strength test, cylindrical specimens of dimension 150 mm diameter and 300 mm length were cast.

Split tensile strength was calculated as follows: Spilt Tensile strength (MPa) = 2P / π DL Where, P = Failure Load (kN) D = Diameter of Specimen (150 mm) L = Length of Specimen (300 mm) Test Results of splitting tensile strength for M60 grade of concrete. These cylinder specimens were left for 28days curing in a curing tank. After the course of curing, the specimens were ready for testing. All the cylinders were tested. Test Results of splitting tensile strength for M60 grade of concrete shown.

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International Research Journal of Engineering and Technology (IRJET)

e-ISSN: 2395-0056

Volume: 08 Issue: 03 | Mar 2021

p-ISSN: 2395-0072

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Table 9: Test Results For Split Tensile Strength of GGBS Mix

GGBS (%)

7 days 28days (N/mm2) (N/mm2)

0%

6.79

7.78

10%

7.36

9.6

20%

8.49

10.6

30%

9.2

11.74

40%

8.77

13.72

50%

7.78

9.9

5. CONCLUSION Graph 3: Split Tensile Strength (Copper Slag) In summary of the above investigations, the following conclusions are made from the experimental results indicated following:

Table 8: Test Results For Split Tensile Strength of Copper Slag Mix CS (%) 0%



7 days 28days (N/mm2) (N/mm2) 5.66 6.5

10%

5.94

6.79

20%

6.65

6.36

30%

7.78

12.03

40%

6.36

9.48

50%

4.95

9.2



Comparing the replacement of GGBS and replacement of Copper slag on concrete. Finally, the result get Replacement of GGBS attained higher strength compared to replacement of Copper slag.

The compressive strength attained at 40% as 64.4N/mm2 and the tensile strength attained at 40% as 13.72 N/mm2

REFERENCES 1. Gopal Chalamcharla Venu, A. Suresh, Nath V. Gokul, “Partial Replacement of Cement with GGBS in Concrete” in International Journal of Advance Research, Ideas and Innovations in Technology.,(Volume3, Issue5).

2. P Lakshmaiah Chowdary, S Khaja Khutubuddin,(2017) “An Experimental Study on Cement Replacement by GGBS in Concrete” in International Journal of Innovative Research in Science, Engineering and Technology Vol. 6, Issue 4, April 2017 3. Ambrish E1, Dhavamani Doss S2, (2017) “Partial Replacement of Copper Slag as Fine Aggregate” in SSRG International Journal of Civil Engineering (SSRG-IJCE) – volume 4 Issue 3 – March 2017.

4. Tamil Selvi P, Lakshmi Narayani P (2014) “Experimental Study on Concrete Using Copper Slag as Replacement Material of Fine Aggregate” in Journal of Civil & Environmental Engineering.

Graph 4: Split Tensile Strength (GGBS)

5. Jl. Soekarno Hatta and Km.9, Palu, (2015) “Using GGBS for partial cement replacement in concrete: Effects of waterbinder ratio and GGBS level on activation energy”, in International Journal of Technology (2015) 5: 327-336 ISSN 2086-9614

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